The World Health Organization (WHO) confirmed the news about the 'emergence and the rapid expansion of a new AH3N2 virus subclade'.
The new variant, called J.2.4.1 or subclade K, which was first identified in Australia and New Zealand in August, has now been detected in over 30 countries.
“Current epidemiological data do not indicate an increase in disease severity, although this genetic shift makes a notable evolution in the virus,” said Dr Wenqing Zhang, Unit Head for Global Respiratory Threats at the Department of Epidemic and Pandemic Threats Management of the World Health Organisation.
The evolution of the influenza viruses makes it imperative to constantly update the vaccine composition. As per the WHO, there are around one billion cases of seasonal influenza annually, including up to five million cases of severe respiratory illness. Up to 650,000 deaths each year are owing to seasonal influenza-related respiratory disease.
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As per a news report by Independent, the virus strain ended up being predominant in the United Kingdom and Japan. It has been reported that nearly 90 per cent of the flu samples in these countries are now A/H3N2 K. A similar trend has also been observed in the United States and Canada.
“Vaccination remains our most effective defence, including against drifted strains, particularly for high-risk populations and those taking care of them,” Dr Zhang insisted.
Experts say early evidence suggests that current seasonal vaccines continue to offer protection against severe diseases and reduce the risk of hospitalisation.
Preventive measures:
Simple preventive measures like regular handwashing, wearing masks in crowded spaces, covering nose and mouth while coughing and sneezing, staying home when unwell and drinking plenty of fluids can help in preventing the spread of the disease.
Please consult a health expert for more information.